On Mon, Jan 2, 2012 at 2:30 PM, Matthew Versaggi
<profversaggi@gmail.com> wrote:
Here's what I got working and when it failed .... it was just the basic 'hello world' kind of stuff:
Worked:
final KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
Died:
// this will parse and compile in one step
kbuilder.add(ResourceFactory.newClassPathResource("HelloWorld.drl", DroolsTest.class), ResourceType.DRL);
LogCat:
01-02 13:13:17.684: E/AndroidRuntime(537): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.versaggi.android.droolsandroidtest/com.versaggi.android.droolsandroidtest.DroolsAndroidTestActivity}: java.lang.NullPointerException
That's about as far as I could get.
I think this DOC will probably help out ....
https://github.com/cgreenhalgh/droolstest/blob/8ea1a06d9b1b38a40b1add7f988ebbf9f4ff3e88/docs/drools-on-android.html....
I had to re-compile the CompositeClassLoader.java file and then reinsert it into the drools-api-5.1.0.M2.jar file to get past this issue:
"A small modification is needed in org.drools.util.CompositeClassLoader. Apparently, the Android JVM doesn't allow null as the parent classloader so I changed that to super(CompositeClassLoader.class.getClassLoader()) in the constructor, and that works fine."
However I think that his other modifications aren't completely integrated into the drools-compiler-5.1.0.M2.jar or the drools-core jar files he provides just yet.
*********************************
On Mon, Jan 2, 2012 at 2:11 PM, Wolfgang Laun
<wolfgang.laun@gmail.com> wrote:
On 2 January 2012 13:58, profversaggi
<profversaggi@gmail.com> wrote:
I've run across the work of a very bright man in the UK who did it as part of
an integrated systems he was working on ... and I got his code working up to
the point where it died loading the DRL rules.
His rules? Your rules? Did you try the simple "Hello World" rule?
rule HW
when
then
System.out.println( "Hello world" );
end
-W
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